A bit cheeky I know but since the best people to ask this question are right here, I'm sure you'll forgive me

I've re-wired my solar powered LED string lights as I had a bit of an accident involving a garden strimmer...

I had to remove one of the bulbs and re connect the wires. However, they're now behaving rather oddly and are now 'on' when the panel is getting light and 'off' when it is dark, when obviously it should be the other way around?

Any ideas of, a. What I've done wrong and, b. How to fix it so they work properly again?
Lisa